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EnglishEight X-linked recombination-defective meiotic mutants (representing five loci) and 12 X-linked mutagen-sensitive mutants (representing seven loci) of Drosophila melanogaster have been examined cytologically in neuroblast metaphases for their effects on the frequencies and types of spontaneous chromosome aberrations. Twelve mutants, representing five loci, significantly increase the frequency of chromosomal aberrations. The mutants at these five loci, however, differ markedly both in the types of aberrations produced and the localization of their effects along the chromosome. According to these criteria, the mutants can be assigned to four groups: (i) mutants producing almost exclusively chromatid breaks in both euchromatin and heterochromatin; (ii) mutants producing chromatid and isochromatid breaks in both euchromatin and heterochromatin; (iii) mutants producing chromatid mutants producing chromatid and isochromatid breaks clustered in the heterochromatin.
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| Titolo: | Genetic control of chromosome breakage and rejoining in Drosophila melanogaster. I. Spontaneous chromosomal aberrations in X-linked mutants defective in DNA metabolism. |
| Autori: | |
| Data di pubblicazione: | 1979 |
| Rivista: | |
| Handle: | http://hdl.handle.net/11573/6865 |
| Appartiene alla tipologia: | 01a Articolo in rivista |
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http://hdl.handle.net/11573/6865
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